LXR linux/include/linux/resource.h

   1#ifndef _LINUX_RESOURCE_H
   2#define _LINUX_RESOURCE_H
   3
   4#include <linux/time.h>
   5
   6struct task_struct;
   7
   8/*
   9 * Resource control/accounting header file for linux
  10 */
  11
  12/*
  13 * Definition of struct rusage taken from BSD 4.3 Reno
  14 * 
  15 * We don't support all of these yet, but we might as well have them....
  16 * Otherwise, each time we add new items, programs which depend on this
  17 * structure will lose.  This reduces the chances of that happening.
  18 */
  19#define RUSAGE_SELF     0
  20#define RUSAGE_CHILDREN (-1)
  21#define RUSAGE_BOTH     (-2)            /* sys_wait4() uses this */
  22
  23struct  rusage {
  24        struct timeval ru_utime;        /* user time used */
  25        struct timeval ru_stime;        /* system time used */
  26        long    ru_maxrss;              /* maximum resident set size */
  27        long    ru_ixrss;               /* integral shared memory size */
  28        long    ru_idrss;               /* integral unshared data size */
  29        long    ru_isrss;               /* integral unshared stack size */
  30        long    ru_minflt;              /* page reclaims */
  31        long    ru_majflt;              /* page faults */
  32        long    ru_nswap;               /* swaps */
  33        long    ru_inblock;             /* block input operations */
  34        long    ru_oublock;             /* block output operations */
  35        long    ru_msgsnd;              /* messages sent */
  36        long    ru_msgrcv;              /* messages received */
  37        long    ru_nsignals;            /* signals received */
  38        long    ru_nvcsw;               /* voluntary context switches */
  39        long    ru_nivcsw;              /* involuntary " */
  40};
  41
  42struct rlimit {
  43        unsigned long   rlim_cur;
  44        unsigned long   rlim_max;
  45};
  46
  47#define PRIO_MIN        (-20)
  48#define PRIO_MAX        20
  49
  50#define PRIO_PROCESS    0
  51#define PRIO_PGRP       1
  52#define PRIO_USER       2
  53
  54/*
  55 * Limit the stack by to some sane default: root can always
  56 * increase this limit if needed..  8MB seems reasonable.
  57 */
  58#define _STK_LIM        (8*1024*1024)
  59
  60/*
  61 * GPG wants 32kB of mlocked memory, to make sure pass phrases
  62 * and other sensitive information are never written to disk.
  63 */
  64#define MLOCK_LIMIT     (8 * PAGE_SIZE)
  65
  66/*
  67 * Due to binary compatibility, the actual resource numbers
  68 * may be different for different linux versions..
  69 */
  70#include <asm/resource.h>
  71
  72int getrusage(struct task_struct *p, int who, struct rusage __user *ru);
  73
  74#endif
  75